30results about How to "Overcoming Difficult Problems" patented technology

The invention discloses a non-submersible underwater pipeline remote operation welding maintenance equipment and method, comprising an H-shaped pipeline support frame, a casing positioner, a welding cabin, and a casing; the H-shaped pipeline support frame is equipped with a hydraulically driven Height adjustment mechanism, left and right adjustment mechanism, front and rear adjustment mechanism and pipe holding jaws; the casing positioner is equipped with hydraulically driven casing positioning claws; the casing has a wedge-shaped sealing ring; the welding cabin includes three welding cabin flaps and Six welding claws form a hexagonal structure after closing. The middle welding compartment is equipped with a drive chamber. The left welding chamber and welding compartment weight adjustment chamber are installed on the left welding compartment. The right welding compartment and welding compartment drainage chamber Installed on the flap of the right welding cabin, the left welding chamber and the right welding chamber are symmetrically arranged, and the driving chamber is equipped with a driving mechanism and a driving gear; relying on the sleeve to connect the old and new pipelines, it overcomes the need for underwater maintenance of large-scale pipelines For the problem of difficult alignment, the remote control operation and the connection process of GMAW surfacing welding + fillet welding have overcome the limitation of water depth. It can be widely used in the field of underwater and submarine pipeline maintenance.

The invention discloses a measuring device for the mechanical stroke of a high-voltage switch cabinet. The measuring device comprises a main ruler, an auxiliary ruler and a measurement stroke adjusting assembly, the main ruler and the auxiliary ruler are matched in a sliding manner, a first measuring head and a main dial are arranged on the main ruler, a second measuring head and an auxiliary dial are arranged on the auxiliary ruler, the main dial and the auxiliary dial are adjacently arranged, the first measuring head and the second measuring head are parallelly arranged, one end of the main ruler is provided with a first hinged seat, one end of the auxiliary ruler is provided with a second hinged seat, the measurement stroke adjusting assembly includes a first movable adjusting arm and a second movable adjusting arm whose middle parts are hinged through a screw fastener, the front end of the first movable adjusting arm is connected with the first hinged seat in a hinged manner, and the front end of the second movable adjusting arm is connected with the second hinged seat in a hinged manner. The measuring device for the mechanical stroke of the high-voltage switch cabinet can conveniently complete measurement of a switch, the mechanical stroke and the overstroke of a high-voltage circuit breaker in the high voltage switch cabinet, and has the advantages of being high in test precision, small in size and portable, convenient to operate, and simple in structure.

The invention discloses a filling-type self-service flexible point-touch guiding cable dragging device for mines, which includes a cable retractable assembly, a flexible point-contact multi-dimensional nested curved guiding device, a fixing device, and a guiding device pulling part and a filling type fluid annular self-service thrust reverser, the flexible point-contact multi-dimensional nested curved guide device is movably arranged in the traction part of the guide device, and the flexible point-contact multi-dimensional nested curved guide The end of the device protrudes from the guiding device and the traction device is set; the fixing device is set on the flexible point-contact multi-dimensional nested curved guiding device, and the filling type fluid annular self-service thrust reverser is movably set on the fixing device , the cable retracting assembly is arranged close to the pulling part of the guiding device. The invention belongs to the technical field of cable tow cables, and specifically refers to a filling-type self-service flexible point-touch guiding cable dragging device for mines, which solves the problems of heavy cables, laborious dragging and moving of workers, and reduces cable dragging due to friction.

The invention relates to the technical field of household appliances, and discloses a refrigerator with an automatic door opening and closing device. The refrigerator comprises a refrigerator shell, two refrigerator doors and a controller. The refrigerator doors comprise main doors and auxiliary doors; the auxiliary doors are slidably connected to the main doors; sliding rails are connected to themain doors; first supports, second supports, driving wheels and driven wheels are arranged at the two ends of the sliding rails; driving motors are connected to the driving wheels; belts are connected between the driving wheels and the driven wheels; sliding blocks are connected between the auxiliary doors and the belts and slidably connected to the sliding rails; transverse rods are arranged onthe auxiliary doors, and racks are arranged on the transverse rods; and gears matched with the racks are arranged on the first supports. The driving motors serve as the only power source, the auxiliary doors slide on the main doors, the main doors can rotate around hinging shafts, thus the refrigerator doors are opened, and the problem that in the prior art, labor is wasted due to the fact that the refrigerator doors are manually opened is solved.

The present invention relates to a craniofacial interactive restoration method of ancient human skulls based on the soft tissue distribution of modern humans, specifically comprising the following steps: step 1, geometric repair of ancient human skulls; step 2, registration of ancient human skulls and modern human skulls; Step 3, craniofacial restoration based on the soft tissue distribution of the reference model; Step 4, construction of a candidate dataset of craniofacial restoration results; Step 5, interactive craniofacial restoration based on the statistical shape model. The beneficial effects of the ancient human skull craniofacial interactive restoration method based on the distribution of modern human soft tissues: improve the accuracy of the craniofacial restoration method based on skull registration; improve the accuracy of the ancient human skull craniofacial restoration results; improve the craniofacial restoration. The accuracy of surface restoration results.

The invention discloses a high efficient solar hot-gas generating system of mountain impact chimney. It is one generating device in facilities utilizing solar thermal energy which can regenerate greenenergy. It is characterized in that: it contains hot-gas duct system of heat collecting and retaining unit, hot-gas heat-collecting system of heat collecting and retaining unit of mountain body slopeand generating system. The hot-gas duct system contains mountain body, peak chimney on top of it, mountain chimney inside it and mountain flat cavity. The flat cavity connects with the upper hot-gaslinking duct, hot-gas duct of heat collecting and retaining unit of mountain body slope, lower cool-gas linking duct and cool-gas inlet duct of generator in sequent. The invention is the most economical generating mode with high-benefit, which has smallest investment, lowest cost, most simple structure, most rapid constructing speed, longest serve years and without pollution discharging or destroying ecological environment.

The invention provides a method for modeling the planar slot antenna based on a supporting vector regression; according to the main mechanical structure parameters and value range of functional components of a planar slot antenna, Latin Hypercube Sample method is utilized to select proper test data, and then simulated numerical computation of electromagnetic fields is applied to modeled objects soas to obtain training samples for a model of the supporting vector regression and then to establish the model for the supporting vector regression of f(x)= (sigma) summation of <n>i=1(a-a<*>)K(x,x)+b. A genetic algorithm is used for optimizing the parameters of the established model to obtain an optimal model, and then a test sample generated randomly is used for validating the performance of the sample. The method provided by the invention for modeling the planar slot antenna based on the supporting vector regression can accurately and rapidly estimate the electrical property valuesof the planar slot antenna with arbitrary structure parameters, avoid electromagnetic numerical computation, and solve mechanism research in influence of the mechanical structure factor of the planarslot antenna on the electrical property and the problem of design and optimization of the planar slot antenna, thus establishing a reliable foundation and basis for selecting the modeling and the processing precision of the planar slot antenna.

The invention discloses a method for building a mountain orchard transportation system, which includes two major operation steps of laying a monorail and assembling and debugging of a transport machine. The specific operation steps include: (1) preliminary design of the laying pattern of the monorail according to the type of fruit to be transported; 2) Determine the laying density of the monorail according to the yield and growth period of the fruit, and form a laying scheme in combination with the laying pattern in step (1); (3) carry out on-the-spot investigations on the mountain according to the laying scheme in step 2), and then conduct a laying plan. Site selection along the path, and mark the corresponding position; (4) Construct the cement mount on the path selected; (5) Install the monorail support frame on the cement mount; (6) Install the monorail splicing, and then erected on the monorail support frame; the construction method of the present invention can organically combine the construction of the track with the terrain, so that the stability and efficiency of the fruit transportation after construction are greatly improved, and it has the advantage of fast construction speed.

A method for surveying and adjusting water injection wells in oil fields by using indicator curves. It mainly solves the problem of high cost of the existing water well surveying and adjustment. It is characterized in that: according to the injection volume of the whole well and 150% of the injection volume, two tests are carried out successively, and according to the flow pressure value and flow value obtained from the test, the overcurrent pressure loss value is found out by comparing the flow nozzle curve chart of the process design, and the obtained The average pressure of the formation and the water absorption coefficient of the formation; when keeping a certain water nozzle constant and meeting the geological requirements of injection volume, check the water nozzle curve chart to get the value of the overcurrent pressure loss, and then get the value that should be before the water nozzle in this layer. Flow pressure value and flow pressure loss value, and finally get the diameter of the faucet. This method can realize rapid measurement and adjustment, without changing the original water injection string process and water injection process, and without cost input.

The invention belongs to the technical field of nuclear power maintenance, and in particular relates to a method for taking out heat transfer tubes of steam generators. After obtaining the specific position of the heat transfer tube, cut the heat transfer tube by cutting the tube inwardly, and then use metal heating equipment to form a helical or straight heating track on the inner wall of the heat transfer tube to reduce the tube diameter, and then cut it from the primary side of the tube sheet its unplugged. The beneficial effect is that the heat transfer tube of the in-service (or decommissioned) steam generator can be removed without damaging (cutting) the steam generator shell, and the in-service steam generator can still be used after the tube is removed . The invention utilizes the principle of electric spark machining, without complex transmission mechanism, can realize cutting the heat transfer tube from the inside to the outside at an indeterminate height, and can overcome the difficulty of cutting the heat transfer tube in a special environment; use argon arc welding to melt The principle of metal removes the expansion force of the heat transfer tube, and can complete the radial shrinkage of the heat transfer tube, so as to realize the peeling of the heat transfer tube and the tube hole of the tube sheet.

The invention provides an energy-saving transformer with a self-adaptation function. The energy-saving transformer comprises a three-dimensional rolled iron core. The three-dimensional rolled iron core is of a three-dimensional structure with a right triangular cross section formed by combining three single-frame iron cores; the single-frame iron cores are formed by continuously rolling an amorphous alloy magnetic permeability material in a seamless manner; a low-voltage winding and a high-voltage winding are wound on the three-dimensional rolled iron core; taps of the low-voltage winding and the high-voltage winding are respectively connected with a loaded capability regulation switch; wire turns of the low-voltage winding are connected in parallel or in series; the high-voltage winding is in triangular connection or a star-like connection; and the loaded capability regulation switch is controlled by a loaded capability regulation controller. According to the energy-saving transformer provided by the invention, the amorphous alloy energy-saving material, the single-frame iron core seamless winding technology, the energy-saving structure of the three-dimensional rolled iron core, and various automatic size and capability adjusting energy-saving technologies are organically combined to realize the zero-load consumption of the transformer to the greatest extent, so that the construction investment of a power grid and the consumption of the raw materials in an equipment manufacturing process can be reduced; and the operation security, the power supply quality and the power supply reliability of the power grid can be improved.

The invention provides a method for making 1-propyl bromide, which comprises the preprocessing of hydrogen bromide, the drying of propylene, the activation of propylene and the synthesis of 1-propyl bromide. The method is to use high-purity gaseous hydrogen bromide and polymer-grade propylene as raw materials and carry out free radical reaction under the action of air containing 20 to 50 ppm ozone to obtain a product containing more than or equal to 95 percent of 1-propyl bromide. The reaction is carried out under the water-free condition in the presence of a reductive agent. The process has the advantages of low production cost, short route, simple and convenient operation, little corrosion to equipment, environmental protection, etc.